A wearable computing has been proposed as an alternative of the best mobile computing interfaces and devices. A digital garment acts as a key element of wearable computing. The authors will apply digital yarn link as material of data communications on purpose to take advantage of a digital garment. This paper proposes the link buffering architecture and the transmission processes for Peer-To-Peer (P2P) communications using a digital yarn. Then it proposes the link buffering control and data frame transmission methods for efficient link buffering as well as frame buffering process for fault-recovery.